Two men have been indicted by a Norfolk County grand jury for allegedly removing asbestos from a Medway rental home without following state guidelines for the process.

David Einis, 57, of Weston, the owner of the single-family rental home, and Nicholas Pasquantonio, 41, who works as a Plainville-based heating contractor, were each indicted Thursday on two counts of violating the Massachusetts Clean Air Act. They are accused of failing to file a notice of asbestos removal with the state Department of Environmental Protection and failing to prevent asbestos emissions, Attorney General Martha Coakley’s office said yesterday.

Pasquantonio was also indicted on charges of witness intimidation, according to the attorney general’s office.

Medway Board of Health Chairman Robert Collum said yesterday that he hasn’t seen many cases with the toxin in the past 25 years.

“I think that was only the second time we’ve come across asbestos,” Collum said.

Einis hired Pasquantonio of Johnny’s Oil Service Inc. in Plainville, who is not a licensed asbestos contractor, in early December 2010 to replace the boiler in the Medway home where a family with several children live, according to information in a press release from the attorney general’s office. Pasquantonio did not seal off the basement while he replaced the boiler, the release said.

A spokeswoman from the attorney general’s office declined to give the address of the house.

After notification from the Medway Board of Health, the state Department of Environmental Protection inspected the home and found asbestos was improperly removed and released, according to the press release.

Einis and Pasquantonio did not notify the DEP and did not follow proper procedure, according to the attorney general’s office.

The Department of Labor Standards requires that asbestos removal be performed by licensed contractors only, and that contractors give details on when the removal will occur and how asbestos will be removed, stored and disposed.

Pasquantonio is also accused of going to the home and threatening one of the tenants, telling the person not to testify against him at trial after he found out he may be criminally charged, authorities said.

The home has since been decontaminated, Department of Environmental Protection Spokesman Joe Ferson said yesterday. Ferson said he thinks the family is still living in the home.

Einis and Pasquantonio will be arraigned in Norfolk County Superior Court at a later date, according to the attorney general’s office.

Einis said yesterday he has no comment on the indictment.

Pasquantonio was not available for comment.

Whitney Clearman can be reached at 508-634-7556 or wclearman@wickedlocal.com.